01

Add the continuous loads first

Combine router, modem, laptop, lighting, and other essential watts. Motor-driven appliances need separate startup checks.

02

UPS labels do not guarantee every device

Desktop PCs, NAS units, and medical equipment can have specific transfer-time and power-quality requirements.

03

A refrigerator favors 1kWh and higher output

Higher continuous and surge output provides more margin when a refrigerator starts while other essential devices are already running.